Just updated both my desktop and my laptop to version 2.74 of MLV, and both when restarting after the update displayed the helpful message "Error loading file due to error: Further occurances of this error will be suppressed." And a button underneath that simply says 'Yes'

I have gotten that same error after updating the past several versions, but keep forgetting to fix it.

It doesn't hurt anything. This is what is causing it if you are curious:
After update MLV restarts, and reopens any log file you had open when it closed. If you didn't have a file open it tries to open a file named " " and creates an error. This has really been happening all along with Auto Update.
the difference is that somewhere around 2.68 I changed error reporting. In earlier version almost all non critical errors were suppressed and logged, but not reported to the user. So, that error was suppressed by that and wasn't there. Now by default errors are reported to the user unless otherwise handled.

In this case it will probably take less time for me to get rid of that error than it did to explain it, so let me do that before then next release

Yeh. If you open MLV and don't load a log, update, and after the program restarts, you'll get the error. I can't get the error anymore because I have the latest update. I have nothing to update to so I won't get the error again until a new version is out.

EDIT: I did the autoupdate, it caused the above error. Then i went and downloaded the latest version, and it fixed everything Sorry to bother you. Although My AFR's are way off now, they are stating that its as lean as 41:1 afr, where before it was 17:1 afr?